72185847764 has 24 divisors (see below), whose sum is σ = 127656417000. Its totient is φ = 35713036800.

The previous prime is 72185847757. The next prime is 72185847781. The reversal of 72185847764 is 46774858127.

It can be written as a sum of positive squares in 4 ways, for example, as 58109923600 + 14075924164 = 241060^2 + 118642^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 594512 + ... + 705560.

It is an arithmetic number, because the mean of its divisors is an integer number (5319017375).

Almost surely, 2^72185847764 is an apocalyptic number.

It is an amenable number.

72185847764 is a deficient number, since it is larger than the sum of its proper divisors (55470569236).

72185847764 is a wasteful number, since it uses less digits than its factorization.

72185847764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112763 (or 112761 counting only the distinct ones).

The product of its digits is 21073920, while the sum is 59.

The spelling of 72185847764 in words is "seventy-two billion, one hundred eighty-five million, eight hundred forty-seven thousand, seven hundred sixty-four".